Secondary battery.



Y Patented Dec. 30, |902. l. KITSEEV. l SECONDARY BATTERY.

(Application led Apr. 10, 1893.)

(Np Model.)

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ISIDOR KITSEE, OF PHILADELPHIA, PENNSYLVANIA.

SECON DARY BATTERY.

SPECIFICATION forming part of Letters Patent ANO. 717,416, dated December 30, 1902.

Application iiled Apri1 10,l893. Serial No. 469,822. (No model.)

To tZZ whom it may concern: g

Be it known thatl., IsInoR KITSEE, a citizen of the United States,residing at the city of Philadelphia, in the county of Philadelphia and State of Pennsylvania,have invented cer` tain Improvements in Secondary Batteries, of which the following is a specification.

generally formed of plates of lead provided with active material placed in holes or caviblocks. l 'ently and then placed in the spaces formed by ties formed in 'such plates. In the use'of secondary batteries of this description theekposed surfaces of l.lead eventually becomey unduly brittle and'warp, and the action of` the current occasions-a scaling of such eX- posed su'rfaces, thereby causing a short-circuiting between the plates of opposite signs. In the case of the positive plate or electrode of the battery buckling is also occasioned by the fact that in the use of the battery the oXid.

of lead increases in volume without a corresponding increase ofvolume of its support.

My present invention has for itsobject the obviating the difficulties hereinbefore set forth; and it consists in the employment of a conductor in such a way as to expose the least possible surface of the same.

It consists also int-the particular construc tion of the conductor, whereby expanding room is provided, as also an adjustable de` vice capable of compensating for the contraction incident tothe use of such electrode in a secondary cell, and also in the particular arrangement whereby aseparating-plate isl made part of such electrode and out of contact with the active material ofsuch electrode.

Referring to the drawings, Figure l is an elevation of an electrode embodying my invention; Fig. 2, a sectional view on the line m of Fig. l; Fig. 3, a horizontal sectional view on the line y y of Fig. l.

B is an encircling frame or band of conducting material; L, the conductor proper, bent in zigzagshape', so as to form spaces for the active material D, provided with holes or apertures ol.

E is a ring or band of soft rubber holding together the ends of the encircling band B and the ends of the conductor proper, L. After the active material is placed in the spaces of the conductor and the encircling Varound the whole plate.

'Y sition a second series of soft-rubber bands b As is well known, secondary batteries are are carried around the separating-sheets R and the elect-rode. Y

The active material is shown in the form of Such blocks are molded independthe conductorsg-but the active material may also be plastered in said spaces without departing from the scope of my invention. is also shown in Fig. l, the conductor proper,

L, is also bentso as to form on one serieeon the lower end and on the other series on the upper end anopen space S, which space is provided partly to allow expanding room for the active material.

In cases where either the band B or the ring E, or both, are inadequate of them- .selves fully to follow the expansion of the active material the spaces S can be made in proportion large enough to compensate for such expansion. jtical and better to provide for the whole elec- I have found it more practrode onlythese two-spaces S, one for each series, and `to'provide these spaces between the conductor proper and the encircling band; but, if desired or preferred, such spaces may be provided in. the inner faces of the conducy.tor by shaping it in such form as will secure suchs'paces on its inner faces.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-V l. An electrode for electric cells, comprising a conducting-strip bent so as to provide a series of spaces capable of expanding, independently-formed blocks of activematerial arranged within said spaces, said blocks being provided with holes4 or apertures, and means surrounding the'electrode and located Aopposite the face-surfaces of said blocks for holding said blocks in place. p

2. An electrode for electric cells, comprising a conducting-strip bent so as to provide a series of spaces, a series of perforated blocks removably arranged in said spaces, means for preserving the shape of said strip, and means surrounding the electrode and located oppo- IOO site th'e face-surfaces of said blocks for holding said blocks in place.

3. An electrode for electric cells, comprising a conducting-strip bent in zigzag form to provide a series of spaces, a series of perforated blocks removably arranged in said spaces, means for preserving the shape of said strip, and means surrounding the electrode and located opposite the face-surfaces of said blocks for holding said blocks in place.

4. An electrode for electric cells, comprising a conducting-strip bent in zigzag form to provide a plurality of rows of expansible spaces, a series of perforated blocks removably arranged in said spaces, means for preserving the shape o f said strip, and means surrounding the electrode and located opposite the face-surfaces of said blocks for holding said blocks in said spaces.

5. An electrode for electric cells, comprising a conducting-strip bent in zigzag form to provide a plurality of rows of expansible spaces, each of said rows having at one of its ends a space for permitting such expansion, a series of perforated blocks removably arranged in said spaces, means for preserving the shape of said strip, and means surrounding the electrode and located opposite the face-surfaces of said blocks for holding the blocks in said spaces. f

In witness whereof I have hereunto set my signature in the presence of two subscribing witnesses.

ISIDOR KITSEE.

Witnesses:

CHAS. C. COLLIER, GEO. W. REED. 

